US2029791A - Hair clipper blade - Google Patents

Description

Feb. 4, 1936. e. PLUCHINO HAIR CLIPPER BLADE Filed May 22, 1935 IIIIII.

xusz i Pzuamvo ATTORNEY Patented Feb. 4, 1936 UNITED STATES PATENT OFFICE HAIR CLIPPER BLADE Giuseppe Pluchino, West New York, N. J. Application May 22, 1925, Serial No. 22,715

2 Claims.

My invention relates to a hair clipper and particularly to the cutting plates or blades of such instrument.

Hair clippers now generally used have a pair of cutting blades each provided at the front edge with teeth or serrations, one of the blades being stationary and the other movable. To cut the hair in different lengths, it has heretofore been necessary either to change the blades or to use at least two clippers having blades of different thicknesses. The subject of the present invention relates particularly to the construction of the teeth of the cutting blades and involves such formation of the teeth that they will cut the hair in varying lengths.

It is an object of my invention to provide blades for a hair clipper that are adapted to cut the hair at the back and sides of the head accurately, speedily, and in graduated lengths.

Another object is to provide cutting blades which can be used in asingle hair clipper to cut the hair to different lengths without necessity of changing the blades. 'A further object is to provide cutting blades that may be used interchangeably with the present blades in any standard form of hair clipper whether ofthe electrical or the hand operated types.

My invention is specifically limited to the construction and form of the cutting blades. I do not claim any invention in the mechanism for operating the blades. However, it is to be understood that the blades are to be used with a hair clipper having a suitable mechanism for giving the movable blade the usual reciprocating movement.

In the drawing:

Figure 1 is a perspective view of a pair of cutting blades embodying my invention;

Fig. 2 is a bottom plan view thereof; and

Figs. 3, 4, and 5 are cross-sectional views .of

I modifications of the same.

The drawing illustrates a pairof blades in which in represents the stationary plate and II the movable plate. The plates may be of any suitable form to fit the clipper with which they movable plate. The two sets of teeth cooperate to shear or clip the hair upon reciprocating the movable plate.

The teeth of the stationary blade Ill each comprise an upwardly inclined connecting portion 5- l5 and downwardly extending tooth portion IS. The tooth portion tapers uniformly in thickness from top to bottom, and preferably terminates at its lower end in an overhanging beveled edge H.

The movable blade H has a corresponding set of teeth each comprising a downwardly inclined connecting portion l8 and an upwardly extending tooth portion I 9 which latter portion may be of uniform thickness.

In the form of blades shown in Figs. 1 and 2, the outer faces of the teeth IQ of the movable plate contact throughout their lengths with the inner faces of the teeth I6 of the stationary plate so as to provide long, uninterrupted, shearing surfaces.

The hairs enter into the spaces between the teeth and are sheared or clipped in uniformly graduated lengths by reason of the tapering form of the downwardly extending teeth It of the stationary plate and the shearing action of the teeth l9 of the movable plate.

In the modification shown in Fig. 3, each stationary tooth I6 has a recess 2| in its inner face intermediate its ends, which recess interrupts the shearing contact of the movable tooth l9 against the former. Blades of this character are adapted for use to clip the hair to differentlengths. In such use, the parts below the recess serve to clip the hair finer, or to shorter lengths, while those above the recess serve to cut it coarser, or in longer lengths.

Fig. 4 illustrates a modification wherein the connecting portion 22 of the movable teeth l9 extends forward in theplane of the blade II instead of being inclined downwardly as in the forms previously described.

-A further modification is shown in Fig. 5. In this instance the upper plate 23 is the movable platewhile the lower plate 24 is the stationary one, both sets of teeth having downwardly inclined connecting portions 25 and 26 respectively, and upstanding teeth 21 and 28 respectively. It will be noted that in this form the stationary teeth 28 are likewise of tapering form, being thicker at the top than at the bottom.

The construction of the plates is such that they may be readily interchanged with ordinary plates of the usual hair clipper, and when applied to a clipper maybe used to clip the hair in either direction, that is, up from the neck or down towards the neck. a

My improved hair clipper blades, because of the tapering form of the teeth, enable any person,

whether skilled or not, to cut hair accurately,"

speedily, and in proper gradation.

Having now described the nature of my invenand an elongated tapering tooth portion, and a movable plate having a series of teeth each of which has a connecting portion and an elongated tooth portion, the outer faces of the teeth portions of the movable plate being in shearing contact with the inner faces of the teeth portions of the stationary plate to clip the hair in graduated lengths.

2. Hair clipper blades comprising a pair of plates, one superposed on the other, one of said plates having at its front edge a series of elongated tapering teeth disposed in a plane at an angle to the plane of the plate, each tooth being thicker at one end than at the other, the second plate having a corresponding set of teeth arranged with their outer surfaces in shearing con-

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